Android, 이어폰 연결 감지

private static IntentFilter plugIntentFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
    private static BroadcastReceiver plugStateChangeReceiver = null;
 


// ** onCreate
plugStateChangeReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {

                AudioManager audio = (AudioManager) getSystemService(BaseActivity.this.AUDIO_SERVICE);
                int systemVolume = audio.getStreamVolume(AudioManager.STREAM_SYSTEM);

                // plug状態を取得
                isPlugged = (intent.getIntExtra("state", 0) > 0) ? true : false;

                if (isPlugged) {
                    Log.i(null, "Earphone is plugged");
                } else {
                    Log.i(null, "Earphone is unPlugged");
                }

            }
        };



// ** 리스너 등록
// 리스너 등록할때, 플러그 체크도 같이 해줌
registerReceiver(plugStateChangeReceiver, plugIntentFilter);


// ** 리스너 해제
unregisterReceiver(plugStateChangeReceiver);